I discuss the implications of this punitive tax policy in this CNBC interview.

Normally, this is the section where I highlight certain points I made, or bemoan the fact that I failed to mention an important fact or overlooked a key argument. Today, though, I want to address the do-taxes-impact-growth issue raised by Robert Frank.

More specifically, I want to debunk the Congressional Research Service study that he indirectly mentioned about two minutes into the segment. This is the report that asserted that it doesn’t matter if we impose high tax rates on investors, entrepreneurs, small business owners, and other “rich” taxpayers.

The results of the analysis suggest that changes over the past 65 years in the top marginal tax rate and the top capital gains tax rate do not appear correlated with economic growth. The reduction in the top tax rates appears to be uncorrelated with saving, investment, and productivity growth. The top tax rates appear to have little or no relation to the size of the economic pie.

The good news is that I don’t really need to debunk this CRS study because Steve Entin already has undertaken that unpleasant task. Writing for the Tax Foundation, Steve points out some rather fatal flaws in the CRS study.

The study makes no effort to determine the channels through which the tax changes ought to work to affect the economy, looks at the wrong measure of progress over the wrong time frame, and takes inadequate account of what other tax or economic events are occurring at the same time that might mask the results. …Other changes in taxes and other influences on the economy occurring at the same time can easily hide or counteract the effect of the top tax rate changes alone. It is often impossible to hold other things constant to allow one to see the impact of the single item one wants to assess. When these other influences are omitted from the model, the “missing variables” problem poisons the results. …one should look at the long-term change in the capital stock and the ultimate level of output, not the short-term rise in investment and the short-term change in the growth rate. If one looks only at the growth rate, and not at the level of GDP, one could conclude that the tax rate change has only a temporary benefit, when in fact it is permanently helpful. …Looking only at the amount of investment triggered in the year following the tax change misses the point. The same holds true in the opposite direction for a tax increase. It takes years to retire through attrition the excess capital made redundant by a tax increase. Looking only at the change in investment in the year after the tax cut, rather than the cumulative increase in the stock of capital over time, misses about 95 percent of the impact. You can’t predict this fall’s apple crop by counting the number of seedlings planted this spring.The CRS study omits important variables and poisons its results by not holding other factors constant. The variables it does examine are indirectly related to the relationship one should be studying, but the study does not follow them for long enough to get the whole picture. The study is as weak now as it was when it was first issued. Grade: F.

Yes, lower tax rates are better for economic performance, just as wheels matter for a car’s performance. But if a car doesn’t have an engine, transmission, steering wheel, and brakes, it’s not going to matter how nice the wheels are.

In other words, I was focusing on the fact that you can’t accurately and honestly examine tax policy without looking at the impact of other public policy issues.

I made that point in the CNBC interview, of course, though it’s unclear whether the message got through.

But I think the Clinton years and Bush years make my point. Bill Clinton was bad on tax policy in 1993, but was good on almost everything else (including a cut in the capital gains tax rate in 1997), whereas George W. Bush was okay on tax policy, but was bad on just about everything else.

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People also make lifetime choices based on tax and welfare incentives to participate, withdraw, or simply idle in the workforce. These most pernicious of detriments to economic growth take many years to a couple of decades to manifest, and even longer for the behavioral empirical lessons towards indolence to be drawn (who wants to waste time in France trying to become an entrepreneur when the chances of success are so dismal and the mediocre government services unconditionally guaranteed).

That is why the fact that the US already seems to have engaged a slower growth trendline, so soon after Obama’s election, is such an ominous sign. Sure he inherited some Bush statism, but, on the other hand, many of the most indolence inducing provisions of ObamaCare have not even kicked in yet.

The largely naive American population will hit French growth trendlines well before it fully engages French levels of government.

Slower growth? Not being able to keep up even with average world-wide growth? More France is the solution then!!

How can anyone not see that America has already entered the throes of the same vicious cycle?